A static QR code is fixed forever. A dynamic one points to a short redirect you control, so you can change the destination any time — and count scans.
Why it matters
Print once, update often. Fix a broken link, swap a seasonal offer, or point a poster somewhere new without designing and printing again.
Analytics
Because traffic passes through a redirect, you can see total scans, rough location and device type — useful for measuring a campaign.
Good practice
Keep the redirect stable and never reuse an old code for an unrelated destination, or returning users will be confused.
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